Mark panels removed when screen is removed

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/MatteryScreen.kt

@@ -466,6 +466,11 @@ abstract class MatteryScreen<T : MatteryMenu>(menu: T, inventory: Inventory, tit
 		}
 	}
 
+	override fun onClose() {
+		super.onClose()
+		panels.forEach { it.markRemoved() }
+	}
+
 	public override fun recalculateQuickCraftRemaining() {
 		super.recalculateQuickCraftRemaining()
 	}

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/EditablePanel.kt

@@ -1782,6 +1782,14 @@ open class EditablePanel<out S : Screen> @JvmOverloads constructor(
 	protected open fun beforeRemoved() {}
 	protected open fun onRemoved() {}
 
+	internal fun markRemoved() {
+		if (!isRemoved) {
+			isRemoved = true
+			onRemoved()
+			children.forEach { it.markRemoved() }
+		}
+	}
+
 	fun remove() {
 		if (isRemoved) {
 			return